Global Virtual Nutrition Coach App Market Size, Share & Industry Analysis By Product Type (Live Streaming, On-Demand Streaming), By Device Type (Smartphones, Smart TVs, Laptops & Desktops, Other Devices), By Revenue Model (Subscription, Advertisement), By End-User & Application Industry Region & Key Players – Industry Segment Overview, Market Drivers, Restraints, Competitive Strategies, AI-Powered Personalization Trends & Forecast 2025–2034